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I/O Expander ICs

I/O Expander can easily expand the functions such as GPIOs, Keypads, LED controls and timers to the exsiting systems.


Part Number
Package Dimensions

Features Up to 24 GPIO pins; on-chip RC oscillation Up to 24 GPIO pins; on-chip RC oscillation
Power Suppy 1.62-3.6 V 1.62-3.6 V
Package BGA
(36 pins)
(44 pins)
Status Mass Production Mass Production

Product feature

I/O Expander Example
I/O Expander Example
  • Low-power operation
  • I2C interface; Max. 8×12 key matrix; PWM timer; general-purpose I/O pins (GPIO)
  • Up to 24 general-purpose I/O pins


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